Abstract:
OBJECTIVE:To investigate the relationship between resistin (a potential link between obesity and type 2 diabetes) and preadipocyte differentiation. DESIGN:A rat resistin expression vector was transfected into 3T3-L1 preadipocytes and differentiation was compared between normal 3T3-L1 cells, rat resistin-transfected cells and non-transfected cells grown in conditioned medium taken from resistin-expressing cultures. METHODS:The rat resistin gene was inserted into the pDual GC and pEFGP-N2 expression vectors for examination of the effects of resistin overexpression in 3T3-L1 cells before and after differentiation was stimulated with 3-isobutyl-1-methyxanthine (MIX), insulin and dexamethasone (DEX). Smaller conserved fragments were inserted into short interference RNA (siRNA) expression vectors, for examination of the effect of targeted resistin inhibition on differentiation of resistin-overexpressing 3T3-L1 cells. RESULTS:Prior to stimulation, the resistin-transfected 3T3-L1 cells contained many more small lipid droplets than did non-transfected 3T3-L1 cells. Following stimulation, differentiation in the resistin-transfected 3T3-L1 cells was dramatically promoted, especially in the early stages. Stimulation of differentiation was also observed in non-transfected 3T3-L1 cells grown in resistin protein-containing conditioned medium. The expression of adipocyte differentiation-associated markers such as CCAAT enhancer binding protein (C/EBPalpha), retinoid X receptor (RXRalpha) and lipoprotein lipase (LPL) was upregulated in resistin-overexpressing cells, whereas expression of preadipocyte factor-1 (Pref-1), an inhibitor of preadipocyte differentiation, was downregulated. In addition, expression of two of the three tested siRNAs inhibited the adipoconversion process, providing further evidence that resistin promotes the differentiation of preadipocytes to adipocytes. CONCLUSION:Resistin can promote preadipocyte differentiation. Based on this, we propose that resistin may be an important candidate mediator of obesity-induced insulin resistance.
journal_name
Eur J Endocrinoljournal_title
European journal of endocrinologyauthors
Gong H,Ni Y,Guo X,Fei L,Pan X,Guo M,Chen Rdoi
10.1530/eje.0.1500885subject
Has Abstractpub_date
2004-06-01 00:00:00pages
885-92issue
6eissn
0804-4643issn
1479-683Xjournal_volume
150pub_type
杂志文章abstract:UNLABELLED:In healthy boys, the pituitary-gonadal axis exhibits diurnal variation in early puberty. Serum testosterone levels are higher during the night and low or immeasurable during the day. These fluctuating levels of circulating androgens in early pubertal boys are difficult to monitor. Prostate specific antigen (...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1360401
更新日期:1997-04-01 00:00:00
abstract:OBJECTIVES:Investigation of small numbers of parathyroid tumours by X-chromosome inactivation analysis suggests that the majority of them are monoclonal lesions most likely caused by a somatic mutation. Somatic mutations in the MEN1 gene located on chromosome 11q13 have recently been identified in 12-17% of solitary pa...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1430047
更新日期:2000-07-01 00:00:00
abstract:BACKGROUND:We examined the hypothesis that high FGF-23 levels early after transplantation contribute to the onset of hypophosphatemia, independently of parathyroid hormone (PTH) and other factors regulating phosphate metabolism. METHODS:We measured serum phosphate levels (sPi), renal tubular reabsorption of Pi (TmPi/G...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-10-1150
更新日期:2011-05-01 00:00:00
abstract:OBJECTIVE:To correlate anthropometric, computed tomography and fat cell data from abdominal regions with the levels of serum insulin, C-peptide, leptin, tumor necrosis factor-alpha (TNF-alpha), testosterone, 17beta-estradiol, androstenedione, dehydroepiandrosterone sulphate (DHEA-S) and sex hormone-binding globulin (SH...
journal_title:European journal of endocrinology
pub_type: 临床试验,杂志文章
doi:10.1530/eje.0.1430657
更新日期:2000-11-01 00:00:00
abstract:OBJECTIVE:Validate the acromegaly quality of life (AcroQoL) questionnaire as a disease-generated questionnaire, which analyses physical and psychological domains, the latter subdivided into appearance and personal relationship sub-scales, to evaluate health-related quality of life (HRQoL) in acromegaly. DESIGN:Prospec...
journal_title:European journal of endocrinology
pub_type: 杂志文章,多中心研究
doi:10.1530/eje.1.02214
更新日期:2006-08-01 00:00:00
abstract::Bone mineral density (BMD), bone mineral content and body composition were determined in 47 middle-aged (mean age 47.9 +/- 1.1 years) women with Turner's syndrome. Bone mineral density was measured in the forearm, femoral neck and total body. The women investigated had a BMD lower than the normal mean. When expressed ...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1320047
更新日期:1995-01-01 00:00:00
abstract:OBJECTIVE:Iodine deficiency has re-emerged in New Zealand, while selenium status has improved. The aim of this study was to investigate the effects of excess iodine intake as iodate on thyroid and selenium status. METHODS:In a randomized controlled trial on older people (mean±s.d. 73±4.8 years; n=143), two groups rece...
journal_title:European journal of endocrinology
pub_type: 杂志文章,随机对照试验
doi:10.1530/EJE-11-0575
更新日期:2011-11-01 00:00:00
abstract::The monoclonal origin of gonadotropin-secreting pituitary adenomas has been well demonstrated but only few molecular abnormalities have so far been recognized in these tumors. For many years, several authors have suggested a role for GnRH and/or GnRH receptors (GnRH-R) in the development of these pituitary adenomas. T...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1390157
更新日期:1998-08-01 00:00:00
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journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-08-0069
更新日期:2008-07-01 00:00:00
abstract::Administration of growth hormone (GH) to patients with growth hormone deficiency (GHD) has beneficial effects, but so far has been employed only empirically. We have, therefore, investigated the dose-dependent effect of GH on target tissue by studying biochemical markers of bone and collagen turnover in GHD. Then pati...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1350666
更新日期:1996-12-01 00:00:00
abstract:OBJECTIVE:The aim of the study was to evaluate the expression of tumor necrosis factor (TNF)-alpha protein in the subcutaneous and visceral adipose tIssue in correlation with adipocyte cell Volume, serum TNF-alpha, soluble TNF-receptor-2 (sTNFR-2) and indirect parameters of insulin resistance in overweight/obese and le...
journal_title:European journal of endocrinology
pub_type: 临床试验,杂志文章
doi:10.1530/eje.0.1490129
更新日期:2003-08-01 00:00:00
abstract:Objective:Several clinical studies have reported that renal impairments are sometimes observed in patients with primary aldosteronism (PA). We analyzed the prevalence of renal impairments in PA patients and identified parameters that increase the risk for them. Design:This is a retrospective cross-sectional study. We ...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-19-0047
更新日期:2019-09-01 00:00:00
abstract:OBJECTIVE:Disturbed renal function may play an important role in the clinico-pathological presentation of primary hyperparathyroidism (pHPT). We studied the influence of renal function on the clinico-pathological characteristics of 141 patients (123 women and 18 men) with surgically proven pHPT. METHODS:The 141 patien...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1480597
更新日期:2003-06-01 00:00:00
abstract:OBJECTIVE:This retrospective study describes the role of serum thyroglobulin (Tg) in relation to tumor characteristics in the prediction of persistent/recurrent disease in patients with differentiated thyroid cancer (DTC) with negative Tg at the time of ablation. DESIGN:Between 1989 and 2006, 94 out of 346 (27%) patie...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-07-0399
更新日期:2008-01-01 00:00:00
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journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-09-0751
更新日期:2010-03-01 00:00:00
abstract:OBJECTIVE:We measured the total and nonphosphorylated insulin-like growth factor-binding protein (IGFBP)-1 concentrations in obese children to determine the effect of obesity on the status of IGFBP-1 phosphorylation. We also measured the serum levels of insulin, total and free IGF-I, and IGFBP-3 to investigate their re...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1410585
更新日期:1999-12-01 00:00:00
abstract:OBJECTIVE:To investigate whether patients with Addison's disease and polyendocrine syndromes have undiagnosed autoimmune polyendocrine syndrome type I (APS I). MATERIALS AND METHODS:Forty patients with clinical manifestations resembling APS I and with autoantibodies typical of this condition were screened for Norwegia...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1460519
更新日期:2002-04-01 00:00:00
abstract:OBJECTIVE:To evaluate which tests are performed to diagnose hypercortisolism in patients included in the European Registry on Cushing's syndrome (ERCUSYN), and to examine if their use differs from the current guidelines. PATIENTS AND METHODS:We analyzed data on the diagnostic tests performed in 1341 patients with Cush...
journal_title:European journal of endocrinology
pub_type: 杂志文章,多中心研究
doi:10.1530/EJE-16-0967
更新日期:2017-05-01 00:00:00
abstract::Cinacalcet HCl, an allosteric modulator of the calcium-sensing receptor (CaR), has recently been approved for the treatment of secondary hyperparathyroidism in patients with chronic kidney disease on dialysis, due to its suppressive effect on parathyroid hormone (PTH) secretion. Although cinacalcet's effects in patien...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.1.02007
更新日期:2005-10-01 00:00:00
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journal_title:European journal of endocrinology
pub_type: 杂志文章,meta分析
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更新日期:2010-09-01 00:00:00
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journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1510391
更新日期:2004-09-01 00:00:00
abstract::Sex hormone-binding globulin (SHBG) and corticosteroid-binding globulin (CBG) levels were evaluated in euthyroid (N = 111), hyper- (N = 58) and hypothyroid (N = 38) men, in pre- and postmenopausal women (study 1) and in hyper- (N = 24) and hypothyroid (N = 15) patients before and after treatment with carbimazole or le...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1320594
更新日期:1995-05-01 00:00:00
abstract::To evaluate the effects of two regimens of recombinant human GH (rhGH) on growth, bone growth and bone mineralization in GH deficient children, we studied two groups (A and B), each including 16 GH deficient children matched for sex, age, body mass index, height, height velocity and bone age/chronological age ratio (B...
journal_title:European journal of endocrinology
pub_type: 临床试验,杂志文章
doi:10.1530/eje.0.1420042
更新日期:2000-01-01 00:00:00
abstract:OBJECTIVE:Limited data exist concerning the presence of polycystic ovary syndrome (PCOS) in premenopausal women with nonalcoholic fatty liver disease (NAFLD). We aimed to investigate the prevalence of PCOS in overweight and obese premenopausal women with NAFLD. DESIGN:Prospective, observational, and cross-sectional st...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-15-0567
更新日期:2015-12-01 00:00:00
abstract:CONTEXT AND OBJECTIVE:High-mobility group box-1 (HMGB1) is a pro-inflammatory cytokine that may contribute to the pathogenesis of micro- and macrovascular complications commonly observed in diabetes. We investigated whether HMGB1 is associated with: i) markers of low-grade inflammation (LGI) and endothelial dysfunction...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-11-0662
更新日期:2012-02-01 00:00:00
abstract::Klinefelter syndrome, 47,XXY (KS), is the most frequent sex chromosome aberration in males, affecting 1 in 660 newborn boys. The syndrome is characterized by testicular destruction with extensive fibrosis and hyalinization of the seminiferous tubules resulting in small testes, hypergonadotropic hypogonadism, and azoos...
journal_title:European journal of endocrinology
pub_type: 杂志文章,评审
doi:10.1530/EJE-12-0934
更新日期:2013-03-15 00:00:00
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journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/EJE-09-0151
更新日期:2009-06-01 00:00:00
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journal_title:European journal of endocrinology
pub_type: 杂志文章,评审
doi:10.1530/EJE-13-0894
更新日期:2014-06-01 00:00:00
abstract::We have identified and characterized insulin-like growth factor I (IGF-I) and IGF-II/mannose-6-phosphate (IGF-II/M6P) receptors in bovine adrenal cells. Iodine-125-labeled IGF-I ([125I]IGF-I) binding was characteristic of the IGF-I receptor, and binding kinetics as well as receptor densities were similar in cortical a...
journal_title:European journal of endocrinology
pub_type: 杂志文章
doi:10.1530/eje.0.1300265
更新日期:1994-03-01 00:00:00
abstract::In recent years, 2-[(18)F]-fluoro-2-deoxy-D-glucose positron emission tomography/computed tomography (FDG-PET/CT) has emerged as an important tool for the postoperative management of patients with differentiated thyroid cancer (DTC) and it is widely used in selected clinical situations. The most valuable role that FDG...
journal_title:European journal of endocrinology
pub_type: 杂志文章,评审
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更新日期:2015-09-01 00:00:00